Era to change the plot. More modern technology. But humans also have experience and knowledge of modern religious reasons to explain the mysteries of this experience is not.
Change to the modern era. State-of-the-art technology, but humans still have experienced religious reasons and modern knowledge to explain the wonders of this experience.
The Lecture Period converted to modern technology, but man, it still has a religious experience and the reason for the modern knowledge explains the secrets of this experience.